Adjustable oil burner for gardens and orchards



y 9, 1938. s. YOSHINAKA 2,124,328

ADJUSTABLE OIL BURNER FOR GARDENS AND ORCHARDS Filed April 28, 1937 40 and lobes for covering air holes, 22 adjustably disposed through any of a series 40 ,Patented July 19, 1938 Q 2,124,328

UNITED STATE-S PATENT OFFICE ADJUSTABLE on. BURNER. Foa GARDENS AND oaommns I Seiclii Yoshinaka, Mela, Wash. Application April 28, 1937, Serial N0. 139,558

2 Claims. (01. 158-91) This invention relates to oil burning. heaters cheaply constructed tubing. The lower end. is for orchards and vegetable gardens. preferably slit to provide a plurality of legs ii In. the raising of fruit and vegeta les where for use in maintaining the tube in perpendicular frost occurs, it is frequently necessary at certain position, and in event the use is on soft or culti- 5 seasons, to provide heat for the prevention of vated soil, the legs should be adapted to be 45 damage to such crops by freezing. Various deforced deeply into the earth for rigidity. Envices have been tried for that purpose, but they trances l2 for air are provided between the legs have not been satisfactory, or adaptable for proand in event of the use of stove pipe or other ducing both smoke, and clean warm vapor. All ready constructed tube, then the alternative sec-' such devices have also been too expensive in contions I3 between the legs are preferably bent in- 10 struction for general use in locations where large ward to provide a flange or bracket I3 around numbers of heating devices are necessary to prothe inside of the tube to support an oil cup i5. tect growing crops of one owner. Said cup is preferably provided with a flange It is therefore among the objects of this in- IS around the top thereof, both for supporting vention to provide asimple and inexpensive dethe cup and for closing the tube at that point, is vice, and one which can be constructed princiand it may be integral with the material from pally from. parts readily obtained in ordinary which the cup is depressed. Near the lower part commercial stores, for burning low grade oils. of the cup a series 'of relatively small holes ll Such heaters to be adaptable for economical use are dispos through e Wa s he eof and in large numbers for protecting fruits and vegespaced above the bottom of the cup to leave a 20 tables from unseasonable frosts. cavity ill for receiving and burning fuel oils A further object is to provide an adjustable therein. heater, for supplying heat to various elevations, An oil supply chamber I8 is suitably positioned and for directing the currents of heat and smoke adjacent the outside of the tube and is connected in predetermined directions. with the cup-by a feed pipe i9, passed through 25 A still further object is to provide a heater for the tube wall, and is preferably provided with a the formation and dispensing of either heavy valve 20 for regulating the flow. of oil from the smoke and smudges as coverings and/or clean chamber into the cup. warm vapors, for radiation of warmth over vege- Suflicient air flows into the cup through the table growths. small holes to provide for slow combustion of the 30 With these and other objects that will hereinoil and to thereby produce a heavy smoke or after appear, I have illustratively exemplified my smudge, which is frequently preferred for appliinvention by the accompanying drawing, of cation on orchard trees, and requires very little which: oil. In order to carry this smoke to a higher Figure 1 represents a perspective view of the level than the length of one tube or section illus- 35 assembled burner with parts broken away, 1 trated at Ill, I provide one or more other tubes Figure 2 represents an enlarged top plan of a as 2i slightly larger for slidable or telescopic cup for burning oil, with an adjustable cap theremounting over the tubes Ill, and adapted to be on provided with vanes for directingair currents, sustained at any desired elevation by a small rod Figure 3 represents a enlarged sectional view of small holes 23 in opposite sides of the tubes,

of the cup and vanes with lobes thereon in posiand resting r s the top of the t b In, tion for uncove a inlet 110165, A damper plate 24, is preferably provided over Figure 4 represents an enlarged fragmentary the top of the tube, for regulating the outer flow sectional view of the cup, showing the cap, vanes of Smoke and vapor, f Various degrees f open and lobes in position for covering the air inlet mg and for guiding the flow in direction desired holes' For these purposes the plate 24 is preferably Figure 5 is a fragmentary view of the upper pivotally mounted on a pin 25 and supported on a portion of a burner flue showing a damper plate shoulder 26 of an arm I The arm in tum is and assembl therefor, with dotted lines showg an altergate position f the m adjustaby supported over the tube by resilient Like numerals on the djflferent figures repre fingers 28 and 29 for clamping disposition astride sent like parts. Numeral i0 indicates a tubular One Side W l f h mm, T in permits flue, which may be formed of a section of ordithe damper to be moved laterally, and perpennary stove pipe of desired diameter, or of any dicularly, and obliquely to either side for guid- 55 ing the flow of smoke and vapor, and for protection against a wind current.

In order to provide for faster consumption of the oil, and for more and cleaner vapor, additional openings 30 through the walls of the cup are provided. These are spaced above the smaller holes, and are relatively larger in diameter, and so,provide a greater supply of air, for combustion of the oil and for the combustion oi? the smoke or carbon, in order to produce a clean heated vapor. This is particularly desired for vegetable gardens, where a sedimentary or sooty deposit on vegetables discolors the same and is objectionable. v

The directions of the flow of air through the larger holes is regulated by baiiie vanes 3| which are attached to, or integral with an annular cap 32, rotatably mounted over the rim of the cup. The vanes slope obliquely downward from the cap. and have flattened faces on planes at right angles with the inner walls of the cup, for direct- 'ing the flow of air inward and over the flames of the oil for burning the carbon, and upward by spiral travel for increasing the draft upward through the flue. The sizes of the passageways through said larger holes, is controlled by lobes 33, preferably integral with the vanes and suspended on a twist from the lower ends thereof, and have flattened faces on same planes as the inner walls of 'the cup. Thus when the cap is turned to the position shown in Figure 3 the holes are open, and the air currents are carried over the flames and upward by the vanes. When the cap is turned to position shown in Figure 4,

the lobes are positioned across, and close the holes entirely. Other positions'of the lobes, may only partially cover the holes, as desired.

In order to adjust or turn this cap and dependent vanes and lobes an aperture or doorway 34, is provided through the wall of the flue i0, adjacent to the top of the cup for entrance of a hand for manual operation, or the insertion of a wire therefor. This aperture is also important for admitting a suitable supply of additional air for inducing or increasing an upward draft through the flues for increasing the flow of smoke or vapor, as may be desired. The extent of the opening through the aperture 34 may be regulated-by a door 35 adiustably mounted over the same by a latch bolt 38 aiiixed through the upper portion of the door and slidably disposed in slot 31 through the wall of the tube. Notches 38 along one side of the slot provide supports for the bolt at such various elevations, for maintaining the door in desired positions for regulating the doorway passage.

I have described generally the functionsof the upper end larger holes in the cup, and the ac companying vanes and lobes, as if for. creating clean heated vapor, but they are not solely for such purposes. They are also used, and important, for regulating proportions of combined smoke and heat, in varying degrees, for a variety of purposes, according to the temperature of the weather, the velocity of the wind, and the kind of trees, shrubs, and vegetables to be protected thereby.

While I have illustrated my invention by specific drawing, and this specification, for explaining the general operation, yet I do not desire to limit my invention thereby, but desire to fully cover the invention within the scope of my claims.

Having described my invention I claim as new,

1. An oil burner for producing heated vapor for orchards and vegetable gardens, comprising, a tubular flue, an oil cup mounted within and across the interior of said flue, and means for feeding a predetermined supply of fuel oil into said cup, said cup provided with holes circularly disposed around and through the side walls thereof, an annular cap rotatably mounted around the rim of said cup, flattened vanes pro- Jected downward obliquely from said cap along the inner sides of said walls and comprising two faces-one face parallel with the inner sides of said cup for closing said holes, and the other on a plane on an angle to said walls for directing a flow of heated vapor upward with a gyratory motion for promoting more thorough combustion. 2. An oil burner for producing heated vapor for orchards and vegetable gardens, provided with a cup for receiving and burning oil therein, said cup provided with holes circularly disposed around and through the side walls thereof, an annular cap rotatably mounted around the rim of said cup, flattened vanes projected downward obliquely from said cap along the inner sides of said walls and comprising two faces-one face parallel with the inner sides of said cup for closing said holes, and the other on a plane angular- 1y to said walls for directing a flow of heated vapor from said cup upward by spiral movement for promoting more thorough combustion.

SEICHI YOSHINAKA. 

